Science Crossword

3. one- or many-celled organism that lives in moist or wet surroundings
6. disease carrying organisms
7. a type of protein that speeds up chemical reactions in the body
9. the process of giving a vaccine by injection or by mouth
10. the process of heating liquid to a specific temperature that kills most bacteria
12. a complaex group of defenses
13. molecules that are foreign to your body
14. a set of DNA on a chromosome that carries instructions

1. the use of chemicals to destroy cancer cells
2. a disease that is caused by a virus, bacterium, protist, or fungus and is spread from an infected organism or the environment to another organism
4. a protein made in response to an antigen
5. a minute piece of genetic material surrounded by a protein coating that infects the multiple in host cells
8. sexually transmitted diseases
11. substances that cause an allergic response
13. an overly stron reaction of the immune system to a foreign substance